Prehistoric Life Folding Ruler

This traditional folding wooden ruler is printed on both sides with the 5 billion-year history of life on Earth. On one side there is an accurate mm and cm scale along with a timeline of species and eras (not to scale!) Each section even has a map of the position of the continents at that time.  The other side has an amazing full-colour pictorial timeline of plant and animal life in the landscape - from the formation of the planet to a modern paleontologist! Please look at the pictures to see the detail and quality.

Folding wooden ruler, 2 metres long, printed on both sides.
Graduated in centimetres and millimetres.

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